Grater



'(No Model.)

A. KRAMER & W. ERIKSSON.

' GRATER.

No. 452,015. Patented May 12', 189 1.

STATES PATENT OFFICE.

ANTON KRAMER AND IL-LIAM ERIKSSON, OF ANNAPOLIS, MARYLAND.

GRATER.

SPECIFICATION forming part of Letters Patent No. 452,015, dated May 12,1891.

Application filed December 5, 1890. Serial No. 373,668- (No model.) I

To 00% whom it may concern:

Be it known that we, ANTON KRAMER and WILLIAM ERIKSSON, citizens of theUnited States, residing at Annapolis, in the county of Anne Arundel andState of Maryland, have invented certain new and useful Improvements inGraters; and we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

Our invention relates to that class of grating-machines wherein aspirally-perforated cylinder and a perforated concave bottom of arectangular box or receptacle are employed for grating bread, crackers,and like articles for household and other purposes; and the inventionhas for its-object to simplify, improve, and cheapen the cost ofconstruction of this class of graters over the existing prior state ofthe art.

To this end the invention consists in the novel construction andarrangement of parts, as will be hereinafter more fully described, andspecifically pointed out in the claim.

e have illustrated our invention in the accompanying drawings, in whichFigure l is a perspective view of our improved machine, partly brokenaway to show the cylinder; and Fig. 2 is across-section of the same.

The same letters of reference indicate corresponding parts in theseveral figures.

Referring to the drawings, A indicates a rectangular box or receptaclesuitably mounted upon and secured to the upper ends of inclined legs B BB B, each pair of which present the form of an inverted letter V.Secured to the lower edge of one side of this rectangular box is theturned edge of a metallic concave bottom 0, the opposite side beingsecured to the inner side near the lower edge of the opposite side ofthe box, leaving a small portion of the concave bottom projecting alittle higher upon this side of the box than on the other side to allowthe grating action to be commenced by the roughened side of the concavebottom upon the article placed in the box, this action being performedin conjunction with a grating-cylinder.

D indicates the grating-cylinder, the body or main portion of which ispreferably constructed of wood, which is provided with a covering ofsheet metal d, such as tin, iron, &c., and having spirally-arrangedperforations d therein with the projections outside, thus causing theouter roughened surface of the cylinder and the inner roughened surfaceof the concave bottom of the box to operate together. The casing isprovided with openings E E, through which the journals E of the cylinderis passed, forming bearings for the journals of the cylinder. Thejournal E is squared off at its outer extended end to admit of its beingpassed through an eye F of a similar form in one end of a crank G, a pinH being passed through the free end of the journal E, by means of whichthe crank G is secured upon the end of the journal.

Special importance is attached to the making of the ends of thereceptacle or box extended downwardly below the sides of the box,wherein by such construction of the ends we not only afford asecurefastening-surface for the bottom, but give the box a rigidityandstrength at these portions for forming the bearings therein for thejournals of the cylindrical grater and securely holds the concave bottom0.

From the foregoing description, taken in connection with theaccompanying drawings, the operation of our device will be obvious.

It will be noticed that the receiving side or edge of the grating O isextended upward and attached to the inner side of the box A to form inconnection with the cylinder a contracting receiving-throat in which thegrating operation is begun, While to firmly secure the said bottom theends are rigidly secured to the convex under edges of the ends of thecasing, and the opposite edge is turned outward, forming a horizontalflange by which the bottom is attached to the under edge of the rearside of said box, by which construction the tendency of the rear edge ofthe concave. during the operation to work loose under the traction ofthe cylinder is obviated.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is.

A box or receptacle whose ends are formed with convex under edges andhaving a concave grating-bottom secured to said. under as herein shownand described, and for the IQ edges, one side of said grating extendingpurposes set forth. above the other and above the grating-oylin- Intestimony whereof Weaffix our signatures der and the other side bentoutward to form in presence of two witnesses.

5 a flange by which it is attached to the under ANTON KRAMER.

rear edge of box A, and a solid grating-cyl- WVILLIAM ERIKSSON. indercovered with a perforated sheetrmetal Witnesses: plate located in thebox, said box being snp- JOHN T. JEFFERSON,

ported upon the legs thereof, substantially JOHN DUFFY.

